Lenses

Refraction

Bending of light when it passes from one medium to another

When does light bend toward the normal, and when does it bend away from it?

When light bends toward the normal when it enters a denser medium

When does light bend toward the normal, and when does it bend away from it?

Light bends away from the normal when it enters a less dense medium

Laws of Refraction

Explains how light bends when it moves between two different media.

does Light travel at different speeds in different materials?
(True or False)

True

What causes the light to change direction?

The change in speed

Angle of incidence

Angle of incidence

Angle of refraction

Angle of refraction

Indices of refraction

Indices of refraction

Lenses

a transparent object that bends light

Lenses are used in?

eyeglasses, cameras, microscopes, telescopes

Concave lens

Relatively thin across their middle and thick at the upper and lower edges

Convex lens

Relatively thick across their middle and thin at the upper and lower edges

Also known as diverging lens

Concave Lens

Also known as converging lens

Convex lens

Beyond 2F (SALT)

Smaller, Inverted, Between F and 2F on the other side, Real

At 2F (SALT)

Same size, Inverted, At 2f on the other side, Real

Between 2F and F (SALT)

Larger, Inverted, Beyond 2F on the other side, Real

At F (SALT)

no image, no image, no image, no image

Infront of F (SALT)

Larger, Upright, The same side of the object; behind the object, Virtual

Concave Lens (SALT)

Smaller, Upright, The same side of the object, Virtual